3 IZA Discussion Papers
IZA Discussion Paper No. 6547
published in: International Journal of Manpower, 2013, 34 (2), 167-180
IZA Discussion Paper No. 2068
published in: The Economic Record, 82 (257) 2006, 207-224
IZA Discussion Paper No. 1536
published as: 'Peer Effects in Welfare Dependence: Quasi-experimental Evidence" in: Journal of Human Resources, 2009, 44(3), 799–825